Spraying apparatus.



PATENTED MAR. 6, 1906. A. KRAUTZBBRGER. SPRAYING APPARATUS APPLICATION FILED OUT. 3, 1903.

2 SHEBTS 8HEET 1.

III/IIIII/IIIIIIII/A 'II/IIII/IIIII vg/IIIIIIIIIIIIIIIIIIIIlIIIlIIIIII/lll k HESSES BY TTU AIL/S No. 814,218. i r ":PA-TEN-TEDMAR. 6, 1906.

- LKR'AUTZBERGER- SPRAYING APPARATUS.

APPLICATION IYILED 0011. 3, 1903.

UNITED STATE PATENT OFFICE.

ALBERT KRAUTZBERGER, OF FRIEDLAND, GERMANY.

7 Belgium, No. 167,375, dated December 19,

1902, and for which I have made application in Austria, Sub. No. 30,591-02/1, dated December 15, 1902 and I do hereby declare the nature of this invention and in what manner the same is to be performed to be particularlydescribed and ascertained in and by the following statement.

Apparatus for spraying paint by means of compressed air is already emplo ed to a considerable extentas, for examp e, in'the potte ry industry for painting backgrounds;

' Such apparatus, however, as heretofore con' f structed is subject to the disadvantages that it is very complicated and that the parts in-' tended for the reception of paint sooner or later-become leaky and allow the aint to find its way into other portions of t e a pa- 1 .ratus, so as to clog them and render t em useless. If the apparatus has been laid aside 1 even for a short time, so that the paint in it has dried, these disadvantages become es v peciallyapparent. In apparatus of the kind referred-to, moreover, no connection has .35

heretofore been. provided between the airvalve and paint-outlet valve suchas to cause them to act simultaneously, and the opera-f tor. in consequence'of having to attend separately to two valvesis a t towork with too 5 paint-receptacle a, of somewhat on -like' 'let.

great an air-pressure, w ereby the paint is 's rayed in too large a quantity and a great deal of iswasted,

Now this invention has for its object to obviate the aforesaid disadvantages.

Figures 1 and 2 of the accompanying drawings illustrate examples ofapparatus in ac- ,cordance with this invention. Fig. 3 is a sec- I tion of the apparatus shown in'Fig. 2, and Pi s. 4, 5, 6, and 7 are modifications. I

ach of the apparatus shown comprises a shape, the bottom of. which is pre erably downwardly inclined toward the paint-out:

tapers to a fine a erture b and contains a neev dle c, by which t eaperture b can be more or Specification of Letters Patent.

Application filed October 3, 1903. Serial No. 176.648.

'frodn and causes this rod to assume a This consists-of'a conical nozzle that SPRAYING APPARATUS.

Patented March 6. 1906.

less closed or opened. The needle 0 is interchangeably attached to a rod d, which is in turn connected to a rod e, that can be moved to and fro on the upper edge of the cup, preferably in two notchesf andf, provided for the purpose. The rod e is connected by means of an intermediate piece 9, which with a slide h can be moved to and fro by means of the finger so as to bring the needle 0 into any desired position. preferably connected with a guide-piece z', with which there engages a spring device hereinafter referred to. The aperture 6 is surrounded by a second conical nozzle is, so

. as to form an annular aperture through which the air can flow outward and when the valve is open can draw out and spray the paint.

Theslide it is The air enters the nozzle k from the chamber Z, to which it is admitted through a .slidevalve m.

' The arrangement of the slide-valve m dif-' fers according as to the manner in which it is desired that the a paratus should be handled. If it be considered more convenient for working purposes to arrange the air-feed laterally in relation to the handle, the apparatus is arranged as shown in Fi 1. In this case the air-valve m is secure to a rod n, that is adapted to be moved by the slide it in such a way that when the slide is drawn back and the aperture 1) opened the valve m is also o ened. To this end the lower side of the side h is downwardl inclined-toward the A front, and on the inc ine thus formed there runs when the slide his moved a small wheel 0, that is mounted on the upper end of'the tioncorresponding tothatyof the nee le 0.

When the aperture b is open, the air'passes through the openings p into the chamber Z.

The numbero these openings can be varied as desired, and only one opening may in some cases be provided. While the valve m I is opened solely by the movement of the slide ,h, its closure when the slide h is moved in the other direction is efiected'by a spring g, which tends to move it upward. The air enters the apparatus through a pipe 1', which is connect- .ed with the air-reservoir, preferably by means of a tube. I ,The closing of the a erture b can be effected by merely pushin t e slide h forward with the finger. It is, owever, necessaryto supplement this by means of a spring in order to render the closure certain. The

osii III) spring 8 is located in a cavity in the handle t and can be arrangedinany manner desiredfor instance, in such a way that it engages on the one side with the rear wall of this cavity and on the other side with the hereinbefore-mentioned extension i of the slide it. It is then best to close this cavity by means of a hinged lid it, which reaches so far forward that the slide it comes exactly into contact therewith when the air and paint outlets. are fully ppen. Usually it will, however, be found referable to arrange the slide-valve m in the handle of the apparatus so that it will be unnecessary to produce a lateral movement of the air-outlet valve. The backward movement of the slide hfor opening the paintoutlet valve can directly move the spindle of the air-valve, so as to 0 en the latter valve. This arrangement is il ustrated in Fig. 2, which shows the pi e 1' for supplying the air as forming the ban le of the apparatus. In this case the spindle n of the valve m terminates, preferably, in a knob to.

In Fig. 2 the handle of the apparatus is shown entirely formed b the air-inlet pipe. Of course, according to the size of the apparatus, it may be preferable in some circumstances not to let the pipe r form the entire handle of the apparatus, but to place the pipe 1 in a lar e ollow handle. It isthen preferable to p ace the pipe 1 not in the center of the handle, but close to its peripheral surface to admit of its being easily removed, as shown in Fi s. 4 and 6. Neither is it of course absolute y necessary that the air-in- .let valve be placed exactly in the center of the pipe 1'. the, openings valve, but on y on that side at which the air isto pass out, as shown in Figs. 5 and 6.

The operation. of the apparatus is as fol- It could be located laterally if lows: The receptacle a. having been filled with paint, the a paratus is taken in the hand'and a finger is aid on h'in such a way that this slide can be moved at will. If h be then drawn back, the air and paint valves can be opened with perfect uniformity till they are as wide open as possible in the positions shown in the figures. If h be pushed forward or if h be let loose, then the valves will be "closed again by the springs. If it be desired to clean the a paratus, the rod 6, with all the pants attac ed thereto, can be removed with ease. It is then drawn back so far that the pin a can be removed from the connection (1. In the example shown in Fig. 1 in order to do this the li u must first be raised', so as to release the extension '5 of the slide it and enable the whole of it to be taken ,Ollt with ease.

spring 8 can also be easily taken out, if neces- When the lid u is open, the

sary. In the example shown in Fig. 2 also e can be easil taken out, together with the -parts attache thereto. Owing to the great simplicit of these movements, the removal of the needl e crequires but extremely little time, which is a point all the more worthy of 0011- were notarranged around the sideration, because, as is well known, different paints consist partly of, relatively speaking, coarse ingredients, which greatly aifect the needle 0, so that it often requires changing. The needle 0 becomes exposed to special wear when glazes are used, so that it is advisable to dles which can be inserted in d at any time. As the paint-receptacle a has no opening at all toward them, paint will be prevented from finding its way to the air-inlet valve and the s rings.

is impossible. Furthermore, all the partsvof cleane For the latter purpose the air and valve casin are referably not made in one adapted to be screwed off, as shown in Fig. 7.

If it ever be desired to make the cup (1 as light as possible and not allow the weight of the rod e to rest thereon, there ma be combined with the apparatus a special evicev of suitable fork shape for carrying the rod 6, as shown in dotted lines in Figs. 1 and 2. The

wider, so that e is only loosel guided therein;

Having now particularly escribed and ascertained the nature of the said invention and in what manner the same is to be performed, I declare that what I claim is "ole open at the top and otherwise close all around except for a singlepaint-outlet, a'

for regulating said outlet, and means for sup: plying compressed air to said device, substantially as described.

2. In apparatus for spraying paint b means'of compressed air, a cup-like rece taaround except for a single paint-outlet, a

outlet surrounding the paint-outlet, means described.

means of com ressed air, a cup-like recepta cle for the paint open at the to and closed the same, a nozzle surrounding said first nozzle, connections from said second nozzle to a compressed-air supply, a valve in said connections controlling the sup 1y, a slide device in said receptacle oontro mg the amtoutlet and means for controlling said device and valve simultaneously, substantially as described.

4. e In an apparatus for spraying paint by means of com ressed air, a cup-like recepta cle for the paint open at the top and. closed the apparatus are simple and can be easilypiece with t e bo y of the apparatus, but are slide device suspended inside the receptaclefor regulating said outlet, acom'pressed-air all around, an outlet-nozzle in t e bottom of.

have a stock of different interchangeable nee- On the other hand, any entrance of t e compressed air into the paint-receptacle paint nozzles, the pipe 1, and the air-inletnotches f and f are then made somewhatv 1. In an apparatus for spraying paint by means of compressed air, a cup-like rece taslidedevice suspended inside the receptacle cle open at the top and otherwise close all Y 3. In an apparatus for spraying paint by all around, an outlet in the bottom thereof, a slide device suspended in the receptacle controlling said nozzle, a slide connected to said device, a second nozzle surrounding said firstnamed nozzle, means for supplyin compressed air thereto, a valve controlling the supply of air, said valve being operated by the slide, substantially as described.

5. In an apparatus for spraying paint by means of compressed air, a cup-like receptacle for the paint 0 en at-the top and closed all around, a nozz e therein, a slide device controlling said nozzle, a second nozzle surrounding the first nozzle, means for supplying compressed air thereto, a valve controlling the supply of compressed air, means, for simultaneously operating said sliding device and valve to allow paint and air to flow, and means for operating said parts to shut off the flow of paint and air, substantially as described.

6. In an apparatus for spraying paint by means of compressed air, a cup-like receptacle for the paint open at the top. and closed all around, an outlet therefrom and compressed-air connections thereto, said connections forming'the handle of the device, substantially as described.

7. In an apparatus for spraying paint, a cup-like receptacle for the paint open at the top and closed all around and outlet therefrom, and means for supplying compressed air to said device, said receptacle havin an inclined bottom sloping toward the out et, substantially as described.

8. In an apparatus for. spraying paint by means of compressed air, a cup-like receptacle for the paint open at the top and closed all around, an outlet therefrom, a device controlling said outlet, a support 1) for said device and means for supplyin compressed air to the apparatus, substantia ly as described.

9. Inan apparatus for spraying paint by means of com ressed air, a cup-like receptacle for the paint open at the top and closed all around, an outlet therefrom, a device controlling said outlet, a slide h, connections from said slide to said device, a nozzle surrounding the outlet-nozzle, means for supplyin compressed air to said second nozzle, a va ve controlling the sup ly of air, a rod connected to said valve, said rod being operated on the backward movement of slide h,whereby the outlet-nozzle and the valve will be opened simultaneously and a sprin for closing said valve whereby the rod wil operate said slide it to close the outlet-nozzle, substantially as described.

In witness whereof I have hereunto set my hand in presence of two witnesses.

ALBERT KRAUTZBERGER.

Witnesses:

ERNST KATZ, ALBERT SCHENOK. 

